[Bug 680904] wavparse src can not link to audioconvert when using USB sound card

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=680904
  GStreamer | gstreamer (core) | 0.10.36

--- Comment #13 from soho123.2012 at gmail.com 2012-08-06 14:18:52 UTC ---

Hi, Sir

after add some g_warning message to trace the flow, 

gstutils.c, gst_element_get_compatible_pad, about line 1155, 
call gstcaps.c, gst_caps_can_intersect, 
then , line 1254 , CAPS_IS_EMPTY (caps1) is true.

The other case, 
gstpad.c, gst_pad_link_check_compatible_unlocked, about line 1892

call gstcaps.c, gst_caps_can_intersect, 
then , line 1254 , CAPS_IS_EMPTY (caps2) is true.

Then, it's always gstpad.c, gst_pad_link_prepare, line 1997, goto no_format



and 



Both 

gst-launch-0.10 -v filesrc location=/bin/audio_src_48k_le.wav ! wavparse !
audioconvert ! audioresample ! alsasink

and
gst-launch-0.10 -v playbin2 uri=file:///bin/audio_src_48k_le.wav

have not-linked error


Do you have idea?

Thanks!

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